class Message<T>{
    private T message;
    public T getMessage(){
        return message;
    }
    public void setMessage(T message){
        this.message=message;
    }

}
public class TestDemo {
    public static void main(String[] args) {
        Message<Integer>message=new Message();
        message.setMessage(99);
        fun(message);
    }
    public static void fun(Message<?>temp){
        System.out.println(temp.getMessage());
    }
}
